Ultra-High Temperature Ceramics: Materials for Extreme Environment Applications III
Abstract
Ultra-High Temperature Ceramics are a family of compounds that display a unique set of properties, including extremely high melting temperatures (>3000°C), high hardness, and good chemical stability and strength at high temperatures. Structural materials for use in high temperature oxidizing environments are presently limited mostly to SiC, Si3N4, oxide ceramics, and composites of these materials. The maximum use temperature of silicon- based ceramics is limited to »1600°C due to the onset of active oxidation (lowertemperatures in water vapor environments) while oxides have exhibited high creep rates at higher temperatures. The development of structural materials for use in oxidizing and rapid heating environments at temperatures above 1600°C is therefore of great engineering importance.UHTC materials are typically considered to be the carbides, nitrides, and borides of the transition metals, but the Group IV compounds (Ti, Zr, Hf) plus TaC are generally considered to be the main focus of research due to the superior melting temperatures and stable high- melting temperature oxides that form in situ.The combination of properties make these materials potential candidates for a variety of high-temperature structural applications, including engines, hypersonic vehicles, plasma arc electrodes, advanced nuclear fuels, fusion first walls and diverters, cutting tools, furnace elements, and high temperature shielding.The purpose of this third meeting in the series is to bring together disparate researchers from academia, government, and industry in a singular forum that allows the bench researchers to interact with designers and engineers to discuss state-of-the-art research and development efforts, what the results mean in a broader context, and how to move the technology forward toward near-term and longer term use.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 26, 2017
- Source ID
- N62909151C109
Entities
People
- Carolina Tallon
Organizations
- Office of Naval Research
- United States Navy
- University of Melbourne